DSPIC33FJ32GP302-E/SP - 16-bit 40MIPS DSC 32KB Flash | Microchip
MPN: DSPIC33FJ32GP302-E/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.78 | $57.80 |
| 100 | $5.15 | $515.00 |
| 500 | $4.62 | $2,310.00 |
| 1,000 | $4.12 | $4,120.00 |
DSPIC33FJ32GP302-E/SP Overview
A digital signal controller is a hybrid device class that combines the deterministic interrupt behavior and control peripherals of a microcontroller with the math acceleration of a DSP core. In the semiconductor hierarchy, the dsPIC33FJ32GP302 sits between general-purpose MCUs (such as the PIC18 family) and full DSPs, making it a voltage-regulator-free, single-chip solution for embedded digital control loops.
Key features include the 16-bit modified Harvard CPU with DSP instruction support, up to 40 MIPS operation, high-speed PWM outputs, multiple high-speed analog comparators with direct connection to PWM faults, and an on-chip ADC suited to motor-control and power-conversion feedback. The -E/SP suffix denotes an extended operating temperature range of -40C to +125C, which distinguishes it from the standard -I (industrial, -40C to +85C) variants of the same die.
Technically, the CPU module in the dsPIC33FJ32GP302/304 family uses pipelined execution with hardware multiply-accumulate, barrel shifting, and modulo/bit-reversed addressing for efficient FIR and FFT filtering. The peripheral set targets closed-loop control: the motor-control PWM, input capture quadrature encoder interface, and fast comparators form a complete digital power or motor control subsystem on one chip.
Typical applications include brushless DC and PMSM motor drives, switch-mode power supplies and digital lighting ballasts, and industrial control nodes where a 3.3 V extended-temperature controller with through-hole mountability simplifies prototyping and low-volume production.
Design consideration: the device runs from a nominal 3.3 V rail; do not connect it directly to 5 V logic without level shifting, and pair PGECx/PGEDx pins correctly for ICSP programming.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with prices as of 2026-09-27.
Drop-in alternatives for DSPIC33FJ32GP302-E/SP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DSPIC33FJ32GP302-E/SP (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Max CPU Speed, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GP302-I/SP
✅ Drop-In✓ In Stock
$3.7 / Unit
View Datasheet →DSPIC33FJ32GP302T-E/SP
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32GP302-E/TSP
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32MC302-I/SP
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →DSPIC33FJ64GP302-E/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP302-E/SP Maximum Ratings & Electrical Characteristics
| Core | dsPIC 33F, 16-bit |
| Max CPU Speed | 40 MIPS |
| Program Memory Size | 32 KB (32K x 8) Flash |
| Architecture | Modified Harvard, DSP-enhanced |
| Supply Voltage | 3.0 V to 3.6 V |
| Package | 28-SPDIP (SP) |
| Mounting Type | Through Hole |
| Operating Temperature | -40C to +125C (Extended, -E) |
| I/O Ports | 35 (device family level per datasheet) |
| Peripherals | High-speed PWM, ADC, comparators, DMA |
| Comparators | Up to 4 high-speed comparators with PWM fault connection |
| Programming Interface | ICSP via PGECx/PGEDx pairs |
| RoHS Status | Lead Free |
| Lifecycle Stage | Active |
| Package Body | Plastic SPDIP, 2.54 mm lead pitch |
| Debug Support | Yes (ICD, boundary scan) |
DSPIC33FJ32GP302-E/SP Pin Configuration
| Pin 1 | MCLR — Master clear reset, programming voltage input |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive ADC reference / port RB0 |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative ADC reference / port RB1 |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select 1 / port RB2 |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index / port RB3 |
| Pin 6 | AN4/T2CK/QEA/IC7/CN6/RB4 — Analog input 4 / Timer2 clock / QEI phase A / capture 7 / port RB4 |
| Pin 7 | VDD — Positive supply, 3.0 V to 3.6 V |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN7/RA2 — Crystal oscillator input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 — Crystal oscillator output / clock output |
| Pin 11 | RF3 — Port RF3, digital I/O (per datasheet multiplexed functions) |
| Pin 12 | RF2 — Port RF2, digital I/O (per datasheet multiplexed functions) |
| Pin 13 | AN5/QEB/IC8/T1CK/CN11/RB5 — Analog input 5 / QEI phase B / capture 8 / Timer1 clock / port RB5 |
| Pin 14 | VSS — Ground reference |
| Pin 15 | VDD — Positive supply, 3.0 V to 3.6 V |
| Pin 16 | PGED1/AN6/OCFA/RB6 — ICSP data 1 / analog input 6 / port RB6 |
| Pin 17 | PGEC1/AN7/OCB/RB7 — ICSP clock 1 / analog input 7 / port RB7 |
| Pin 18 | AN8/C1IN+/IC2/INT0/RB8 — Analog input 8 / comparator 1 input / capture 2 / external interrupt 0 / port RB8 |
| Pin 19 | AN9/C1IN-/T5CK/IC9/RB9 — Analog input 9 / comparator 1 input / Timer5 clock / capture 9 / port RB9 |
| Pin 20 | VSS — Ground reference |
| Pin 21 | AN10/CVREF/RB10 — Analog input 10 / comparator voltage reference / port RB10 |
| Pin 22 | AN11/RB11 — Analog input 11 / port RB11 |
| Pin 23 | AN12/C2IN-/OC1/RB12 — Analog input 12 / comparator 2 input / output compare 1 / port RB12 |
| Pin 24 | AN13/C2IN+/OC2/RB13 — Analog input 13 / comparator 2 input / output compare 2 / port RB13 |
| Pin 25 | AN14/RB14 — Analog input 14 / port RB14 |
| Pin 26 | VSS — Ground reference |
| Pin 27 | VDD — Positive supply, 3.0 V to 3.6 V |
| Pin 28 | AN15/RB15 — Analog input 15 / port RB15 |
Typical Applications
DSPIC33FJ32GP302-E/SP is suitable for 6 applications: BLDC and PMSM Motor Control, Switch-Mode Power Supplies and Digital Lighting, Industrial Control Nodes, Portable Instrumentation and Data Loggers, Audio Signal Processing, Development, Education and Prototyping.
BLDC and PMSM Motor Control
The DSPIC33FJ32GP302-E/SP fits motor control because its high-speed PWM peripheral, up to four high-speed comparators wired directly to PWM fault inputs, and 40 MIPS DSP core enable deterministic current-loop execution in the tens-of-kilohertz range. The quadrature encoder interface via input capture supports position feedback for PMSM FOC drives. In a typical topology the PWM stage drives a three-phase inverter gate drivers while the ADC samples phase currents each PWM cycle; the DSP multiply-accumulate instructions run Clarke/Park transforms with single-cycle MACs. The extended -40C to +125C temperature range covers enclosed industrial drive enclosures. Trade-off: at 32 KB Flash, only one advanced control algorithm with limited diagnostics fits, so reserve the larger GPX02 variants for sensorless-FOC plus networking stacks.
Recommended
Switch-Mode Power Supplies and Digital Lighting
Digital power conversion benefits directly from this DSC: the fast analog comparators implement cycle-by-cycle current limiting in hardware without CPU intervention, and the high-speed PWM supports complementary outputs with dead-time control for half-bridge and LLC topologies. Operating at 40 MIPS, the part closes voltage-mode or average-current-mode loops above 100 kHz switching frequencies while running housekeeping tasks. In LED ballast applications, the ADC samples output current and the controller performs dimming and power-factor correction in one chip. The 3.0 V to 3.6 V rail and 28-SPDIP through-hole package make lab evaluation easy. A key consideration: place the analog feedback traces away from PWM switching nodes, and use the comparator fault path rather than software interrupts for overcurrent protection to guarantee sub-cycle shutdown.
Recommended
Industrial Control Nodes
For industrial controllers, the DSPIC33FJ32GP302-E/SP combines 35 I/O-level device connectivity, DMA, UART/SPI/I2C serial links, and a 40 MIPS core in an extended-temperature through-hole package that survives panel-mounted enclosures rated to +125C ambient. Typical implementations use the UART for Modbus RTU, SPI for data acquisition front ends, and the internal comparators plus ADC for sensor threshold detection. The modified Harvard architecture keeps interrupt latency short and deterministic, important for timed sampling in process control. Firmware fits comfortably in 32 KB Flash for protocol handling, control loops, and diagnostics. Design tip: reserve one PGECx/PGEDx pair for field ICSP updates and route it to a service header; this enables firmware upgrades without desoldering the SPDIP device from production boards.
Recommended
Portable Instrumentation and Data Loggers
Battery-powered instruments leverage the DSC's DSP capabilities for real-time filtering (FIR/IIR) of sensor data at 40 MIPS while maintaining manageable power consumption at reduced clock rates. The on-chip ADC digitizes analog sensor outputs directly, DMA offloads sample buffers, and results stream over SPI to storage or UART to a host. The 28-SPDIP through-hole package suits prototype and low-volume scientific instruments where hand rework and socketed CPUs are valuable - a failing controller can be swapped in minutes. With 32 KB Flash, a typical build includes sampling scheduler, filter chain, and a serial command interface. For lowest power, run from the internal FRC at divided frequencies between samples and exploit idle sleep; the extended -40C grade also permits outdoor and cold-chain logging deployments.
Recommended
Audio Signal Processing
The dsPIC33FJ DSP engine - single-cycle MAC, barrel shifter, and dual operand fetch - executes audio band FIR and IIR filters, AGC, and tone control efficiently at 40 MIPS, comfortably handling sample rates of 8-48 kHz with multiple biquad stages. While this part lacks a dedicated audio codec interface, its SPI and I2C ports connect easily to external codecs, and the general-purpose PWM can serve as a low-cost DAC for simple tone generation. The 32 KB Flash holds filter coefficient tables plus a modest feature set, appropriate for intercoms, paging systems, and effect pedals. The extended temperature range supports automotive-adjacent audio accessories. Layout consideration: keep the analog supply clean, separate the ADC reference ground, and use the comparators only for digital-domain functions to avoid audible artifacts.
Recommended
Development, Education and Prototyping
The 28-SPDIP through-hole format and Explorer 16/32 Development Board support make the DSPIC33FJ32GP302-E/SP an excellent teaching and prototyping platform. Microchip's Explorer 16/32 hosts this family via Plug-In Modules (PIMs), providing a low-cost modular path from dsPIC33 to PIC32 projects, with PICtail Plus connectors for adding peripherals. Students and engineers can prototype digital filters, motor control, and power conversion on solderless breadboards before committing to a PCB - impossible with QFN or TQFP parts. The ICSP programming needs only a matched PGECx/PGEDx pair and all power pins connected, per the northernsoftware.com support notes. For coursework, the DSP-enhanced instruction set introduces MAC-based filtering without DSP toolchain complexity, and MPLAB toolchains compile the same C code across the whole 16-bit family for easy migration.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP302-E/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GP302-I/SP | DSPIC33FJ32MC302-I/SP | DSPIC33FJ64GP302-E/SP |
|---|---|---|---|---|
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Flash Memory | 32 KB | 32 KB | 32 KB | 64 KB |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +125C |
| Peripheral Focus | General-purpose DSP control (GP) | General-purpose (GP) | Motor-control PWM (MC) | General-purpose (GP) |
Key Differentiators
- Extended temperature range for harsh environments (vs DSPIC33FJ32GP302-I/SP)
- Higher Flash capacity option on identical footprint (vs DSPIC33FJ64GP302-E/SP)
- General-purpose DSP peripheral set (vs DSPIC33FJ32MC302-I/SP)
Design Notes
Decouple every VDD pin (pins 7, 15, 27) with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus one bulk 10 uF capacitor per board. The device is specified at 3.0 V to 3.6 V; a linear regulator such as the MCP1702 or an LDO from a 5 V rail is typical. Brown-out should be enabled in configuration words because the dsPIC33F core can misbehave below 3.0 V during power-down. Estimated: at 40 MIPS typical core current is in the tens of mA range - verify exact figure in the datasheet electrical characteristics table.
Keep the crystal (OSC1/OSC2, pins 9-10) traces short (<15 mm) with guard ground, and place load capacitors directly at the pins. Separate analog ground under the ADC input pins (RB0-RB15 analog functions) from PWM return current; a single solid ground plane with careful component placement is usually sufficient on two-layer boards. Route the PGECx/PGEDx ICSP pair to a 5-pin header (MCLR, VDD, GND, PGEC, PGED) for in-circuit programming without desoldering the SPDIP package.
Three frequent errors: (1) using PGEC1 with PGED2 during ICSP - pairs must match (PGEC2 with PGED2, etc.) per northernsoftware.com programming notes; (2) connecting 5 V logic directly to I/O - the device runs at 3.0-3.6 V only, so level shifting is mandatory; (3) leaving the comparator-to-PWM fault connections unconfigured in motor drives - wire the hardware fault path in software configuration so overcurrent shutdown occurs without CPU latency. Also confirm the -E temperature grade is actually needed; it carries a price premium over the -I grade.
Estimated: the 28-SPDIP plastic package in still air typically has theta_JA above 70 C/W; at a modest 100 mA core current on a 3.3 V rail, dissipation is roughly 0.33 W, giving about a 23 C junction rise - well within the +125C extended rating at +85C ambient. For continuous operation near +125C ambient, reduce clock frequency or core load, and verify the exact theta_JA and power equations in the Microchip datasheet rather than relying on this estimate.
Compliance Information
Digchip spec entry lists LEAD FREE, PLASTIC 28-pin package. REACH/halogen-free/conflict-minerals status not stated in provided data.
